What would be the mass of a sample containing 0.7 mol of pure tungsten?

1 Answer
Meave60
Mar 4, 2016

#"0.7 mol W"="130 g W"#

Explanation:

Multiply the given moles tungsten #("W")# by its molar mass.

#"Molar mass W"="183.84 g/mol W"# (periodic table)

#0.7cancel"mol W"xx(183.84"g W")/(1cancel"mol W")="130 g W"# rounded to 1 significant figure

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